Ive been enjoying the new to me 265 and love the boat. Toilet pump is stuck in the "up" position leading me to believe that the tank is full (raw water seacock is open and toilet was flushing fine). I was out far enough and tried to discharge, I heard macerator running and and assumed tank was emptied, now reads 1/4 ( i didnt check prior to attempting to discharge) but pump handle is still stuck in "up" position and will not budge no matter what the toilet "switch" is set to. Ive tried all positions of the discharge seacock as well as the intake seacock under the floor of the salon ( I know there are 2 one for intake and one for discharge) and no matter what it seems that the tank is full and I can get toilet pump to budge. Any ideas of whats up???